JP4987293B2 - Switchgear - Google Patents

Description

  The present invention relates to an opening / closing device in which a winding body is rotatably received by a lower support member, and the opening / closing body is wound or unwound by the rotating winding body.

Conventionally, in this kind of invention, like the one described in Patent Document 1, a winding body (winding portion 4) for winding and unwinding an open / close body (fireproof sheet 6) is provided from the lower side. There is a building shutter that is received by a support member (a pair of rollers 28, 28).
According to this prior art, since the winding body (winding portion 4) is structured to be received from below, the winding body (winding portion 4) is compared with a structure in which the winding body is supported at both ends thereof. It can suppress that the axial direction center side bends below, and is effective especially when the axial direction dimension of a winding body (winding part 4) is comparatively long.

However, in the above prior art, due to manufacturing variations and the like, when the center line of the winding body and the center line of the support member are not parallel, the outer peripheral surface of the opening / closing body wound around the winding body and the support The surface pressure (load per unit area) with the member may not be uniform in the opening / closing body width direction.
Further, when the support member is constituted by a pair of rollers as in Patent Document 1, the rotation center of the winding body coincides directly above the center that is ½ of the distance between the rotation centers of these rollers. Otherwise, the load is biased to one of the rollers.
Further, when the winding body is received by a plurality of support members arranged in the axial direction, the outer periphery of the opening / closing body wound around the winding body due to variations in the height of the plurality of support members, etc. The surface pressure between the surface and the support member may be different for each support member.
When the surface pressure variation or the load deviation occurs as described above, the opening / closing body sandwiched between the outer peripheral surface of the winding body and the support member is locally pressed and worn. Otherwise, the durability of the support member may be reduced.
JP 2000-303762 A

  The present invention has been made in view of the above-described conventional circumstances, and a problem to be solved by the present invention is an opening / closing device capable of preventing damage to the opening / closing body due to a pressing force from the support member and a decrease in durability of the support member. It is to provide.

Means for solving the above-described problem is an opening / closing device comprising a winding body that winds or unwinds the opening / closing body to open and close, and a support member that rotatably receives the winding body from below. The winding body is wound around the winding body by being sandwiched between the outer peripheral surface of the winding body and the opening / closing body as the winding body rotates in the winding direction. An elastic sheet is provided so as to be fed from between the outer peripheral surface of the winding body and the opening / closing body in accordance with rotation in the feeding direction, and an end side of the elastic sheet in the opening / closing body closing direction is the winding body state not secured to hang when paid out from between the outer peripheral surface and the closing member, or said Ri state der which is fixed to the closing member, the closing direction end portion of the closing member those of In the closed state in contact with the contact target part, the opening direction side of the opening / closing body In the closed state, the elastic sheet is entirely wound around the outer peripheral surface of the winding body and the extra winding portion of the opening / closing body. It is characterized by being sandwiched between .

A first form is an opening / closing apparatus comprising a winding body that winds or unwinds the opening / closing body to open and close, and a support member that rotatably receives the winding body from below. An elastic sheet was interposed between the body and the support member.
Here, the opening / closing device according to the above aspect includes an aspect in which the opening / closing body is used only to perform a closing operation (for example, a shutter device that is closed only for an emergency in order to prevent smoke or flame), A mode in which the body is used to perform only an opening operation (for example, a shutter device that is opened only for emergency purposes), a mode in which the opening / closing body is used to perform both an opening operation and a closing operation, etc. including.

In addition, the opening / closing body includes an opening / closing body formed by connecting so-called slats in the opening / closing direction, an opening / closing body formed by arranging pipe members at predetermined intervals in the opening / closing direction, and a plurality of panel-like members connected in the opening / closing direction. Open / close bodies made of flexible sheet material, open / close bodies made by appropriately combining these slats, pipe materials, panel-like members, flexible sheet materials, etc. From the viewpoint of the above, it is preferably an opening / closing body made of a flexible sheet material.
In addition, although the said flexible sheet | seat material includes the product made from a synthetic resin material, cloth, etc., when considering fire resistance (a flame retardance, incombustibility etc. are included) especially, it has fire resistance. It is preferable to be constituted by a material or a material processed to have fire resistance.

  In addition, the winding body may be configured to rotate so as to wind the opening / closing body around the outer peripheral surface or to feed the opening / closing body wound around the outer peripheral surface. The winding body includes an aspect configured in a substantially cylindrical shape, an aspect configured in a substantially saddle shape, and the like.

  In addition, the support member preferably has a small friction coefficient in the surface shape and material of the portion that contacts the winding body and the opening / closing body wound around the winding body. A roller-like aspect that rotates by receiving the winding body and the opening / closing body wound around the winding body, and receiving the opening / closing body wound around the winding body and the winding body from below. The aspect etc. which were made to slide and rotate are included.

The elastic sheet may be a sheet-like member having elasticity in the thickness direction. Specific examples of the material of the elastic sheet include rubber, an elastic synthetic resin material, a foam material, or a composite thereof. Materials and the like.
A single elastic sheet may be provided between the winding body and the support member, or a plurality of elastic sheets may be provided in the thickness direction or the width direction.
Further, the elastic sheet may be provided on the winding body, may be provided on the support member, or may be provided on the opening / closing body.

Further, in the second embodiment, the elastic sheet that has been wound around the outer peripheral surface of the winding body.

Further, in the third form , in the closed state in which the closing direction end of the opening / closing body is in contact with the contact target site, the opening side portion of the opening / closing body has at least one more turn than the winding body. a switchgear that is to be wound, the elastic sheet that is interposed between the outer peripheral surface and the surplus wound portion of the winding body.

Here, the extra winding portion is a closed state in which a closing direction end of the opening / closing body is in contact with a contact target portion (for example, a floor surface, the ground, a frame member, etc.), and is not drawn out from the winding body. Means a part of the opening / closing body that is left around the winding body and wound around the winding body.
This extra winding portion may be made of a material having no fire resistance, but is preferably made of a material having fire resistance. According to this preferable configuration, it is possible to prevent the flame at the time of fire or the like from coming into direct contact with the winding body or the elastic sheet by the extra winding portion having fire resistance, and as a result, excessive temperature rise of the winding body. It is possible to effectively prevent melting and burning of the elastic sheet.

Further, in the fourth embodiment, the support member, the winding body by a pair of rollers configured to receive rotatably said elastic sheet, said that have been wound on the outer peripheral surface of the rollers.

Further, in the fifth embodiment, the elastic sheet, the opening and closing member is that provided as wound around the winding body with to being wound on the winding body.

Here, as a specific example of the fifth embodiment , there is an embodiment in which the elastic sheet is partially or entirely fixed to the opening / closing body. According to this embodiment, the opening / closing body is the winding body. The elastic sheet is wound around the winding body as it is wound around. In this aspect, it is preferable that the opening / closing body is disposed on the inner peripheral surface side of the opening / closing body when the winding body is wound on the winding body. It is also possible to dispose on the outer peripheral surface side of the opening / closing body.

Further, as another example of the fifth form , there is an aspect in which the end of the elastic sheet on the opening / closing body opening direction side is fixed to the outer peripheral surface of the winding body and the other end side is hung down. Even in this mode, the elastic sheet is wound around the winding body as the opening / closing body is wound around the winding body.
Furthermore, as another example of the fifth embodiment , the end of the elastic sheet on the opening / closing body opening direction side is fixed to the outer peripheral surface of the winding body, and the other end side is fixed to the opening / closing body. An embodiment is mentioned. According to this aspect, it is possible to obtain substantially the same function and effect as the above aspect and to improve the holding strength of the opening / closing body.

Furthermore, as another example of the fifth embodiment , the end of the elastic sheet on the opening / closing body opening direction side is sandwiched between the opening / closing body wound around the winding body and the winding body. In this aspect, the elastic sheet is wound around the winding body as the opening / closing body is wound around the winding body. The part of the elastic sheet on the side of the opening / closing body closing direction in this aspect may be in a state where it hangs down without being attached, or may be attached to the opening / closing body.

In the present specification, the “opening / closing body width direction” means a direction substantially perpendicular to the opening / closing direction of the opening / closing body and not the thickness direction of the opening / closing body. The “opening / closing body thickness direction” means the opening / closing body thickness direction in the closed state.
Further, in this specification, the “opening / closing body opening / closing direction” means a direction in which the opening / closing body moves to partition or open the space .

Since the said form is comprised as demonstrated above, there exists an effect as described below.
According to the first embodiment , the pressing force per unit area received by the support member from the winding body and the opening / closing body wound around the winding body can be substantially equalized by the elastic sheet.
Accordingly, it is possible to prevent the opening / closing body from being damaged by receiving a local pressing force from the support member, or from deteriorating the durability of the support member due to the biased pressing force.

Furthermore, according to the second embodiment , an elastic sheet can be interposed between the winding body and the support member with a specific structure with good productivity.

Furthermore, according to the 3rd form , an elastic sheet can be hold | maintained between the outer peripheral surface of a winding body, and the extra winding part of an opening-closing body.
Therefore, when the opening / closing body is drawn out from the winding body, it is possible to prevent the elastic sheet from sagging and impairing the appearance of the appearance.
In addition, the structure for fastening the elastic sheet to the winding body can be simplified to improve productivity.

Furthermore, according to the 4th form , an elastic sheet can be interposed between a winding body and a supporting member with the concrete structure with favorable productivity.
Moreover, since the elastic sheet is exposed, the maintainability of the elastic sheet is good. For example, when the elastic sheet is worn out due to long-term use, the worn elastic sheet is renewed with the support member. Replace it with something.

Further, according to the fifth aspect , the elastic sheet is wound around the winding body as the opening / closing body is wound around the winding body, and the elastic sheet is interposed between the winding body and the support member. Will be.
Therefore, it is possible to prevent the opening / closing body and / or the supporting member from being damaged by the local pressing force or causing the durability to be lowered by the elasticity of the elastic sheet .

Next, a specific example of the above embodiment will be described with reference to the drawings.
The following specific examples are arranged in houses, buildings, warehouses, factories, underground malls, tunnels, vehicle loading platforms, etc., construction openings, and inside the constructions / structures. An opening / closing device for partitioning or opening a space inside a construction / structure, particularly an opening / closing device preferable as a screen shutter device in which substantially the entire area of the opening / closing body is formed of a flexible sheet material will be described.

  The opening / closing device includes an opening / closing body 10 having a flexible sheet portion 11, a winding body 20 that opens and closes the opening / closing body 10 by winding and unwinding the opening / closing body 10, and the winding body 20 and the winding body. A support member 30 that receives the flexible sheet portion 11 when it is wound so as to be rotatable from below, and a guide rail (not shown) that guides the opening / closing body 10 in the opening / closing direction at both ends in the width direction. It has.

  The opening / closing body 10 includes a flexible sheet portion 11 constituting substantially the entire area of the opening / closing body 10, and a fastening member 12 provided at an end of the flexible sheet portion 11 on the opening / closing body opening direction side ( 2) and a seat plate member 15 provided at the end of the flexible sheet portion 11 on the side of the opening / closing body closing direction.

  The flexible sheet portion 11 includes a plurality of sheet portion constituent members 11a arranged in the opening / closing body width direction so as to correspond respectively to a plurality of winding member constituting members 21 constituting a winding body 20 described later. The seat portion constituting members 11a, 11a are connected by detachable fastening means (for example, buttons, hooks, slide fasteners, hook-and-loop fasteners, magnets, screws, bolts and nuts, etc.), and the opening / closing body width at the connection location Bending is formed in the opening / closing body width direction so as to release the tension in the direction.

Each sheet part constituting member 11a overlaps a plurality of sheet materials 11a1 arranged in the opening / closing body width direction on the end side (see FIG. 3), and sews the overlapped portion in the opening / closing body opening / closing direction. It is composed by attaching.
Each sheet material 11a1 is, for example, fire-resistant (flame retardant or non-flammable fabric such as glass cloth or silica cloth), vinyl chloride resin sheet material subjected to fluorine processing, synthetic resin sheet material containing glass fiber, or the like. A flexible sheet material having non-combustibility and the like).

And the edge part of the opening / closing body opening direction side of each sheet | seat part structural member 11a is formed in a longitudinal cross-section bag shape, and the fastening member 12 is inserted over the opening / closing body width direction in the bag-shaped part. (See FIG. 2).
The fastening member 12 is a rod-like member having substantially the same length as each of the winding member constituting members 21 of the winding body 20. According to a preferred example illustrated, the fastening member 12 is a member having a rectangular bar shape in vertical section.
The material of the fastening member 12 may be a rigid material. In particular, from the viewpoint of improving fire resistance and productivity, it is preferable to use a metal material such as a steel material or a stainless steel material. A rigid resin material, wood, ceramic material, stone material, or the like can also be used.

Further, an elastic sheet 40 is interposed between each winding body constituting member 21 of the winding body 20 and a support member 30 described later.
The elastic sheet 40 has a width dimension that is substantially the same as or slightly shorter than the axial length of each roller 31 (or 32) that constitutes the support member 30 and that extends in the opening / closing direction of the opening / closing body. It is a belt-like member, and is arranged so as to contact each support member 30, and its end on the opening / closing body opening direction side is fastened to the winding body constituting member 21 together with the fastening member 12.
The material of the elastic sheet 40 may be a material having elasticity in the thickness direction, such as rubber, an elastic synthetic resin material, or a foam material.

The fastening structure of the elastic sheet 40 will be described in detail. The closing direction end portion (more specifically, the seat plate member 15) of the opening / closing body 10 is contacted with a target portion y (for example, a floor surface, the ground, a frame member, etc. ), The elastic sheet 40 is further wound around the winding member constituting member 21 of the winding body 20 by about one turn. It is configured to be sandwiched between the winding part x and the outer peripheral surface of the winding member constituting member 21 (see FIG. 2).
According to this configuration, the structure for fixing the elastic sheet 40 to the outer peripheral surface of the winding body 20 can be simplified, and the elastic sheet 40 hangs down when the opening / closing body 10 is drawn out from the winding body 20. It is possible to prevent the appearance of the above from being damaged.
In FIG. 1, in order to clearly show the configuration of the present embodiment, the elastic sheet 40 is pulled out in the closing direction of the opening / closing body without bringing the seat plate member 15 into contact with the contact target portion y. It is said.
Further, according to the example shown in FIG. 2, the preferred embodiment having the extra winding portion x as described above is shown, but it is also possible to adopt an embodiment in which the extra winding portion x is omitted. The elastic sheet 40 is configured to be fixed to the outer peripheral surface of the winding body 20 or the surface of the opening / closing body 10.

  Further, the winding body 20 includes a plurality of winding body constituting members 21 arranged at predetermined intervals over the width direction of the opening / closing body by a core 23 (see FIG. 2) and a shaft member 22 from the inside. It consists of supporting and connecting.

Each of the winding member constituting members 21 is a substantially cylindrical member made of a relatively lightweight metal material. The winding member constituting member 21 includes a concave portion 21a extending in the axial direction on the outer peripheral surface thereof, and the fastening member 12 is fitted into the concave portion 21a. The projection amount of the fastening member 12 in the centrifugal direction is reduced.
According to this configuration, it is possible to reduce the thickness of the sheet portion constituting member 11a wound around the winding member constituting member 21, and the sheet portion constituting member 11a is worn or worn by friction with the support member 30 or the like. The possibility of breakage or the like can be reduced.

  And the winding body 20 of the said structure is received by the several support member 30 arrange | positioned by the predetermined interval over the opening-and-closing body width direction on the downward side, The axial direction edge part side Is rotated in the forward and reverse directions by a drive source 25 (for example, an electric motor, an air motor, a manual rotation mechanism, etc.) provided in

Each support member 30 is configured to rotatably support a pair of rollers 31 and 32 disposed substantially horizontally by a bracket 33.
A plurality (three in the illustrated example) of support members 30 are provided at predetermined intervals over the winding body axial direction with respect to each of the winding body constituting members 21 and 21 on both sides in the opening / closing body width direction. The bracket 33 is fixed to a fixed portion below the bracket 33.
The pair of rollers 31 and 32 includes a virtual straight line connecting the center of one roller 31 and the center of the winding body 20, and a virtual straight line connecting the center of the other roller 32 and the center of the winding body 20. Is set to approximately 60 degrees. This angle is a suitable value that makes it difficult for the winding body 20 to fall off from the pair of rollers 31 and 32 and that reduces the load acting on each roller 31 (or 32).

  In the illustrated example, the contact stability between the flexible sheet portion 11 and each support member 30 is improved by arranging each support member 30 corresponding to the thick portion p where the adjacent sheet materials 11a1 and 11a1 overlap. Although it is good, it is also possible to arrange the support member 30 at a place other than the thick part p.

Thus, according to the opening / closing device having the above-described configuration, during the opening / closing operation of the opening / closing body 10, it is always between the winding body constituting member 21 of the winding body 20 and each roller 31 (or 32) of the support member 30. The elastic sheet 40 is interposed.
Therefore, even when the center line of the winding body constituting member 21 and the center line of each roller 31 (or 32) are not strictly parallel, the winding body constituting member 21 and each roller 31 (or 32) are not The surface pressure (load per unit area) that acts on the elastic sheet 40 can be made substantially uniform by the elasticity of the elastic sheet 40.
That is, as shown in FIG. 3, at the contact portion q between the outer peripheral surface of the flexible sheet portion 11 wound around the opening / closing body 10 and each roller 31 (or 32), the surface pressure (per unit area) due to the contact. Of the elastic sheet 40 is equalized by the elasticity of the elastic sheet 40.

  Furthermore, the rotation center of the winding body 20 does not completely coincide with the center line that bisects the distance between the rotation center of one roller 31 and the rotation center of the other roller 32. However, to some extent, it is possible to prevent the load from being biased to any of the rollers 31 (or 32) due to the mismatch, by the elasticity of the elastic sheet 40.

  In addition, even when the height dimensions of the plurality of support members 30 arranged in the width direction of the opening / closing body are non-uniform, the winding body is wound on any one of the plurality of support members 30 due to the non-uniformity to some extent. It is possible to prevent the load of 20 from being biased by the elasticity of the elastic sheet 40.

  In addition, according to the said embodiment, the outer peripheral surface of the flexible sheet | seat 11 wound around the winding body 20 is partially provided by providing the elastic sheet 40 in the part corresponding to the support member 30 partially. The contact diameter between the expanded portion and each roller 31 (or 32) is improved by increasing the diameter, but the elastic sheet 40 is provided over a plurality of support members 30, and the elastic sheet 40 is opened and closed. It is also possible to adopt a mode in which the elastic sheet 40 is provided on substantially the entire surface in the width direction and the opening / closing direction of the opening / closing body 10.

  Further, according to the above embodiment, the elastic sheet 40 has a simple fastening structure in which the upper end side of the elastic sheet 40 is fastened to the outer peripheral surface of the winding body 20, but the entire elastic sheet 40 is the outer peripheral surface of the winding body 20. Or it is good also as a structure fixed to the flexible sheet | seat part 11. FIG.

  Further, according to the above-described embodiment, the winding body 20 and the opening / closing body 10 wound around the winding body 20 are received by the support member 30 including the pair of rollers 31 and 32. It is also possible to replace the member 30 with a support member (not shown) that receives and slides the winding body 20 and the opening / closing body 10 wound around the winding body 20 from below.

Moreover, according to the said embodiment, it was set as the structure by which the elastic sheet 40 was wound by the winding body 20 in the closed state which made the closing direction edge part of the opening-closing body 10 contact the contact | abutting object site | part y. As another example, in a state where the opening / closing body 10 is drawn out from the winding body 20, the elastic sheet 40 is also drawn out from the winding body 20, and as the opening / closing body 10 is wound around the winding body 20. It is good also as a structure wound around the winding body 20.
In this configuration, the elastic sheet 40 may be partially or entirely fixed to the opening / closing body 10, and the end of the elastic sheet 40 on the opening / closing body opening direction side is the opening / closing body 10 or the winding body. The end of the elastic sheet 40 on the opening / closing body opening direction side may be attached to the inner peripheral surface of the opening / closing body 10 wound around the winding body 20 and the winding body 20. You may hold | maintain by being pinched | interposed between outer peripheral surfaces.
FIG. 1 illustrates the elastic sheet 40 in a state in which each elastic sheet 40 is pulled out in the opening / closing body closing direction in order to clearly show the configuration of the above-described embodiment as described above. Thus, the aspect wound around the winding body as the opening / closing body 10 is wound around the winding body 20 is also shown.

Further, according to the above embodiment, the elastic sheet 40 is provided on the winding body 20 side. However, the elastic sheet 40 is omitted and, as shown in FIG. You may make it fix to the outer peripheral surface of each roller 31 (or 32).
If this structure is demonstrated in detail, support member 30 'will wind elastic sheet 40' around the outer peripheral surface of each roller 31 (or 32) comprised substantially the same as the support member 30 mentioned above, and will adhere | attach it. It is composed of that.
Each elastic sheet 40 ′ is formed in a substantially strip shape from a material having elasticity in substantially the same manner as the elastic sheet 40 described above.
According to the opening / closing device using the support member 30 ′, it is possible to obtain substantially the same operation and effect as the above-described opening / closing device, and since each support member 30 ′ is exposed, the maintainability is also good. is there.

It is a front view which shows an example of the opening / closing apparatus concerning this invention. It is a longitudinal cross-sectional view of the switchgear. It is a principal part enlarged front view of the switchgear. It is a perspective view which shows the other example of a supporting member.

DESCRIPTION OF SYMBOLS 10: Opening-closing body 11: Flexible sheet part 11a: Sheet | seat part structural member 20: Winding body 21: Winding body structural member 30: Support member 31, 32: Roller 40: Elastic sheet

Claims (6)

In an opening / closing apparatus comprising a winding body that winds or unwinds the opening / closing body to open and close, and a support member that rotatably receives the winding body from the lower side thereof,
Around the winding body, the winding body is wound between the outer peripheral surface of the winding body and the opening / closing body as the winding body rotates in the winding direction, and the winding direction of the winding body An elastic sheet is provided so as to be fed out from between the outer peripheral surface of the winding body and the opening / closing body with the rotation of
The end of the elastic sheet in the closing direction of the opening / closing body is not fixed so as to hang down when it is drawn from between the outer peripheral surface of the winding body and the opening / closing body, or is fixed to the opening / closing body Ri state der that is,
In a closed state in which the closing direction end of the opening / closing body is brought into contact with the contact target site, the opening-side portion of the opening / closing body is wound around the winding body by at least one turn, and In the closed state, the entire elastic sheet is sandwiched between the outer peripheral surface of the winding body and the extra winding portion of the opening / closing body . The winding body supports and connects a plurality of winding body constituent members arranged at predetermined intervals across the width direction of the opening / closing body by a shaft member having a smaller diameter than the winding body constituent member. Configured,
The elastic sheet is provided in contact with the outer peripheral surface of the winding body constituting member for about one turn,
The opening / closing body includes a flexible sheet portion, and the flexible sheet portion includes a plurality of sheet portion constituting members arranged in the opening / closing body width direction so as to correspond to the plurality of winding body constituting members, respectively. And forming a deflection in the opening / closing body width direction so as to release the tension in the opening / closing body width direction at the connection location, and arranging the bending portion in correspondence between the adjacent winding body constituting members. opening and closing apparatus according to claim 1, wherein the are. The end part of the opening / closing body opening direction side of the elastic sheet is fixed to the winding body constituting member together with the end part of the opening / closing body opening direction side of the sheet part constituting member. Switchgear. The switchgear according to claim 2 or 3, wherein the adjacent seat part constituent members are connected by a detachable fastening means . The end portion on the opening / closing body opening direction side of the seat part constituting member is formed in a substantially bag shape in longitudinal section, and a fastening member is inserted into the bag-like portion across the opening / closing body width direction,
5. A groove formed along the axial direction of the winder is provided on the outer peripheral surface of the winder constituting member, and the bag-like portion and the fastening member are inserted into the groove. The opening / closing apparatus of any one of Claims . The sheet part constituting member is configured by overlapping a plurality of sheet materials provided continuously in the opening / closing body width direction on the end side,
The switchgear according to any one of claims 2 to 5 , wherein the support member is disposed corresponding to a thick portion where the adjacent sheet materials overlap .

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